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| Mirrors > Home > MPE Home > Th. List > mapssfset | Structured version Visualization version GIF version | ||
| Description: The value of the set exponentiation (𝐵 ↑m 𝐴) is a subset of the class of functions from 𝐴 to 𝐵. (Contributed by AV, 10-Aug-2024.) |
| Ref | Expression |
|---|---|
| mapssfset | ⊢ (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mapfset 8848 | . . 3 ⊢ (𝐵 ∈ V → {𝑓 ∣ 𝑓:𝐴⟶𝐵} = (𝐵 ↑m 𝐴)) | |
| 2 | eqimss2 3997 | . . 3 ⊢ ({𝑓 ∣ 𝑓:𝐴⟶𝐵} = (𝐵 ↑m 𝐴) → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝐵 ∈ V → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) |
| 4 | reldmmap 8833 | . . . 4 ⊢ Rel dom ↑m | |
| 5 | 4 | ovprc1 7451 | . . 3 ⊢ (¬ 𝐵 ∈ V → (𝐵 ↑m 𝐴) = ∅) |
| 6 | 0ss 4358 | . . 3 ⊢ ∅ ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} | |
| 7 | 5, 6 | eqsstrdi 3982 | . 2 ⊢ (¬ 𝐵 ∈ V → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) |
| 8 | 3, 7 | pm2.61i 184 | 1 ⊢ (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 = wceq 1570 ∈ wcel 2143 {cab 2741 Vcvv 3455 ⊆ wss 3906 ∅c0 4287 ⟶wf 6534 (class class class)co 7412 ↑m cmap 8825 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-fv 6546 df-ov 7415 df-oprab 7416 df-mpo 7417 df-1st 7987 df-2nd 7988 df-map 8827 |
| This theorem is referenced by: (None) |
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